United Kingdom, June 15 -- Mark Hamill hasn't let fame "change" him.

The 73-year-old actor had only made a handful of appearances on programmes like The Bill Cosby Show and General Hospital when he was cast as Luke Skywalker in the first Star Wars film series alongside Harrison Ford and Carrie Fisher but despite the global recognition that came with his success, he has managed to stay the same as he was before.

Speaking on Sunday Sitdown with Willie Geist, he said: "I was completely unknown. You just try and reassure yourself that nothing has changed. I haven't changed, people around me are going nuts."

The Hollywood star was then asked where his passion for performing came from in the first place, and recalled going to great lengths t...